14 CFR Part 382 Nondiscrimination on the Basis of Disability in Air Travel (Air Carrier Access Act) (with amendments issued through May 2016)

(b) In assessing whether the passenger's condition poses a direct threat, you must apply the provisions of §382.19(c)(1) - (2) of this subpart.

(1) In making this assessment, you may rely on directives issued by public health authorities (e.g., the U.S. Centers for Disease Control or Public Health Service; comparable agencies in other countries; the World Health Organization).

(2) In making this assessment, you must consider the significance of the consequences of a communicable disease and the degree to which it can be readily transmitted by casual contact in an aircraft cabin environment.

Example 1 to paragraph (b)(2): The common cold is readily transmissible in an aircraft cabin environment but does not have severe health consequences. Someone with a cold would not pose a direct threat.

Example 2 to paragraph (b)(2): AIDS has very severe health consequences but is not readily transmissible in an aircraft cabin environment. Someone would not pose a direct threat because he or she is HIV-positive or has AIDS.

Example 3 to paragraph (b)(2): SARS may be readily transmissible in an aircraft cabin environment and has severe health consequences. Someone with SARS probably poses a direct threat.